DE69023856T2 - Informationswiedergabegerät. - Google Patents

Informationswiedergabegerät.

Info

Publication number: DE69023856T2
Authority: DE; Germany
Prior art keywords: signal; output; resistor; signals; analog
Prior art date: 1989-09-14
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired - Fee Related

Application number

DE1990623856

Other languages

German (de)

English (en)

Other versions

DE69023856D1 (de

Inventor

Hiroshi Fuji

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Sharp Corp

Original Assignee

Sharp Corp

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1989-09-14

Filing date

1990-09-14

Publication date

1996-06-13

1990-09-14 Application filed by Sharp Corp filed Critical Sharp Corp

1996-01-11 Application granted granted Critical

1996-01-11 Publication of DE69023856D1 publication Critical patent/DE69023856D1/de

1996-06-13 Publication of DE69023856T2 publication Critical patent/DE69023856T2/de

2010-09-15 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Links

238000001514 detection method Methods 0.000 claims description 62
239000003990 capacitor Substances 0.000 claims description 37
230000003287 optical effect Effects 0.000 claims description 18
230000005415 magnetization Effects 0.000 claims description 12
230000008859 change Effects 0.000 claims description 3
230000003321 amplification Effects 0.000 claims 1
230000001678 irradiating effect Effects 0.000 claims 1
238000003199 nucleic acid amplification method Methods 0.000 claims 1
238000011946 reduction process Methods 0.000 claims 1
238000012545 processing Methods 0.000 description 44
239000004065 semiconductor Substances 0.000 description 29
239000013598 vector Substances 0.000 description 26
238000010586 diagram Methods 0.000 description 18
238000000034 method Methods 0.000 description 17
230000010287 polarization Effects 0.000 description 15
230000008569 process Effects 0.000 description 7
230000001360 synchronised effect Effects 0.000 description 5
230000008901 benefit Effects 0.000 description 4
238000006243 chemical reaction Methods 0.000 description 4
230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 3
238000012544 monitoring process Methods 0.000 description 3
230000004044 response Effects 0.000 description 3
239000000758 substrate Substances 0.000 description 3
230000005374 Kerr effect Effects 0.000 description 2
238000013459 approach Methods 0.000 description 2
230000009471 action Effects 0.000 description 1
230000007423 decrease Effects 0.000 description 1
230000007547 defect Effects 0.000 description 1
238000012217 deletion Methods 0.000 description 1
230000037430 deletion Effects 0.000 description 1
230000009977 dual effect Effects 0.000 description 1
230000000694 effects Effects 0.000 description 1
239000011521 glass Substances 0.000 description 1
238000004519 manufacturing process Methods 0.000 description 1
239000000463 material Substances 0.000 description 1
238000002310 reflectometry Methods 0.000 description 1
230000000630 rising effect Effects 0.000 description 1

Classifications

- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
- G11B11/10515—Reproducing
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/1055—Disposition or mounting of transducers relative to record carriers
- G11B11/10556—Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position
- G11B11/10563—Access of indexed parts
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10595—Control of operating function
- G11B11/10597—Adaptations for transducing various formats on the same or different carriers
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/005—Reproducing

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Signal Processing For Digital Recording And Reproducing (AREA)
Optical Recording Or Reproduction (AREA)

DE1990623856 1989-09-14 1990-09-14 Informationswiedergabegerät. Expired - Fee Related DE69023856T2 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
JP23901489A JPH03102677A (ja)	1989-09-14	1989-09-14	情報再生装置

Publications (2)

Publication Number	Publication Date
DE69023856D1 DE69023856D1 (de)	1996-01-11
DE69023856T2 true DE69023856T2 (de)	1996-06-13

Family

ID=17038612

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE1990623856 Expired - Fee Related DE69023856T2 (de)	1989-09-14	1990-09-14	Informationswiedergabegerät.

Country Status (4)

Country	Link
EP (1)	EP0418100B1 (ja)
JP (1)	JPH03102677A (ja)
CA (1)	CA2024982C (ja)
DE (1)	DE69023856T2 (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SG81970A1 (en) *	1991-05-10	2001-07-24	Discovision Ass	Optical data storage and retrieval system and method
US5537379A (en)	1991-05-10	1996-07-16	Discovision Associates	Optical data storage and retrieval system and method
US5355356A (en) *	1993-05-19	1994-10-11	Maxoptix Corporation	Charge pump for restoring DC in an optical recording read channel
US5631891A (en) *	1994-01-05	1997-05-20	Fujitsu Limited	Disk reproducing circuit with automatic gain control
US5598396A (en) *	1995-02-15	1997-01-28	Matsushita Electric Industrial Co., Ltd.	Optical disk reproducing apparatus
US5757751A (en) *	1996-01-16	1998-05-26	International Business Machines Corporation	Baseline correction circuit for pulse width modulated data readback systems

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4081756A (en) *	1976-12-30	1978-03-28	Sperry Rand Corporation	Dual channel signal detector circuit
US4495529A (en) *	1982-05-07	1985-01-22	Digital Equipment Corporation	Qualifier circuit
US4764916A (en) *	1985-03-05	1988-08-16	Nec Corporation	Reading circuit for an optical disk apparatus

1989
- 1989-09-14 JP JP23901489A patent/JPH03102677A/ja active Pending
1990
- 1990-09-10 CA CA 2024982 patent/CA2024982C/en not_active Expired - Fee Related
- 1990-09-14 DE DE1990623856 patent/DE69023856T2/de not_active Expired - Fee Related
- 1990-09-14 EP EP90310086A patent/EP0418100B1/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
JPH03102677A (ja)	1991-04-30
EP0418100A3 (en)	1993-03-03
CA2024982C (en)	1996-02-20
CA2024982A1 (en)	1991-03-15
EP0418100A2 (en)	1991-03-20
EP0418100B1 (en)	1995-11-29
DE69023856D1 (de)	1996-01-11

Legal Events

Date	Code	Title	Description
1997-01-02	8364	No opposition during term of opposition
1997-03-20	8328	Change in the person/name/address of the agent	Free format text: PATENTANWAELTE MUELLER & HOFFMANN, 81667 MUENCHEN
2007-07-26	8339	Ceased/non-payment of the annual fee

Publication	Publication Date	Title
DE3727681C2 (ja)	1991-07-18
DE69022929T2 (de)	1996-04-25	Aufnahme-/Wiedergabegerät für optische Scheibe.
DE68917638T2 (de)	1994-12-22	Magneto-optisches Datenaufzeichnungssystem.
DE69612577T2 (de)	2001-08-23	Optisches Aufzeichnungsverfahren zum Aufzeichnen auf Steg und Rille, und geeignetes optisches Aufzeichnungsmedium
DE3789808T2 (de)	1994-08-18	Plattenanordnung und plattenähnliches speichermedium.
DE3852281T2 (de)	1995-07-20	Verfahren und Gerät zur Datenaufnahme/Wiedergabe.
DE69934447T2 (de)	2007-09-27	Schaltung für optische Informationswiedergabevorrichtung, optisches Informationswiedergabevorrichtung und Verfahren zur Wiedergabe von Informationen
DE69429891T2 (de)	2002-07-11	Optische Platte und Vorrichtung zur Aufnahme und Wiedergabe von Informationen
DE60006454T2 (de)	2004-09-09	Datenträger und vorrichtung zum abtasten des datenträgers
DE69833590T2 (de)	2006-12-07	Optische Platte und optisches Plattenlaufwerk
DE69224717T2 (de)	1998-08-06	Informationsaufzeichnungsverfahren und Gerät
DE69422937T2 (de)	2000-10-05	Aufzeichnungsvorrichtung für optische Platte
DE69029115T2 (de)	1997-04-03	Informationsaufzeichnungs- und Wiedergabegerät
DE68925759T2 (de)	1996-07-11	Optische Platte und Aufzeichnungs- und Wiedergabegerät zur Verwendung dieser optischen Platte
DE69806430T2 (de)	2003-04-17	Vorrichtung zur Feststellung von vorausgehenden Pits und Informationsaufzeichnungsgerät damit
DE69624615T2 (de)	2003-07-03	Optisches Informationsaufzeichnungsmedium, optisches Informationsaufzeichnungs-/-wiedergabegerät unter Verwendung dieses Mediums, und Originalplattenbelichtungsgerät zu seiner Herstellung
DE69326391T2 (de)	1999-12-30	Aufzeichnungsverfahren hoher Dichte für magneto-optische Platte und magneto-optisches Aufzeichnungs- und Wiedergabegerät
DE3851943T2 (de)	1995-05-11	Verfahren und Gerät zur Aufnahme von magneto-optischen Platten.
DE3602640A1 (de)	1986-08-07	Optisches informations- aufzeichnungs-/wiedergabesystem
DE69031286T2 (de)	1997-12-18	Informationsaufzeichnungsmedium und Informationsaufzeichnungs/-Wiedergabemethode und -vorrichtung, die dergleichen verwendet
DE69024739T2 (de)	1996-06-13	Optisches Aufnahme-/Wiedergabegerät
DE3214950A1 (de)	1983-02-03	Geschwindigkeitssteuervorrichtung fuer eine informationslese- und -wiedergabevorrichtung
DE69424613T2 (de)	2001-01-25	Aufzeichnungs- und Wiedergabevorrichtung für magnetooptisches Medium
DE68919528T2 (de)	1995-06-14	Magnetooptisches Aufzeichnungsverfahren und magnetooptische Aufzeichnungsanordnung.
DE69023856T2 (de)	1996-06-13	Informationswiedergabegerät.